Editing Multiplication table (section)

==Patterns in the tables==
There is a pattern in the multiplication table that can help people to memorize the table more easily. It uses the figures below:
<div style="margin-left:4em">
<!--
      →                 →
    1 2 3             2   4
 ↑  4 5 6 ↓         ↑       ↓
    7 8 9             6   8
      ←                 ←
      0                 0
   Fig. 1             Fig. 2
-->
{| cellpadding="0" cellspacing="0" style="text-align:center;width:20em;"
| colspan="5" style="font-size:200%;"|→
| rowspan="7" style="padding:1em;"|&nbsp;
| colspan="5" style="font-size:200%;"|→
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| rowspan="3" style="font-size:200%;"|↑
! style="border:1px solid silver;border-radius:1em;"|1
! 2
! style="border:1px solid silver;border-radius:1em;"|3
| rowspan="3" style="font-size:200%;"|↓
| rowspan="3" style="font-size:200%;"|↑
! style="border:1px solid silver;border-radius:1em;"|2
! 
! style="border:1px solid silver;border-radius:1em;"|4
| rowspan="3" style="font-size:200%;"|↓
|-
! 4 || 5 || 6
!  ||  || 
|-
! style="border:1px solid silver;border-radius:1em;"|7
! 8
! style="border:1px solid silver;border-radius:1em;"|9
! style="border:1px solid silver;border-radius:1em;"|6
! 
! style="border:1px solid silver;border-radius:1em;"|8
|-
| colspan="5" style="font-size:200%;"|←
| colspan="5" style="font-size:200%;"|←
|-
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! 0 || 
! style="border:1px solid silver;border-radius:1em;"|5
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| colspan="2"|&nbsp;
! style="border:1px solid silver;border-radius:1em;"|0
| colspan="2"|&nbsp;
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| colspan="5"|Figure 1: Odd
| colspan="5"|Figure 2: Even
|}
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[[File:Multiplication_mnemonic.svg|thumb|250px|Cycles of the unit digit of multiples of integers ending in 1, 3, 7 and 9 (upper row), and 2, 4, 6 and 8 (lower row) on a [[telephone keypad]] ]]
Figure 1 is used for multiples of 1, 3, 7, and 9. Figure 2 is used for the multiples of 2, 4, 6, and 8. These patterns can be used to memorize the multiples of any number from 0 to 10, except 5. As you would start on the number you are multiplying, when you multiply by 0, you stay on 0 (0 is external and so the arrows have no effect on 0, otherwise 0 is used as a link to create a perpetual cycle). The pattern also works with multiples of 10, by starting at 1 and simply adding 0, giving you 10, then just apply every number in the pattern to the "tens" unit as you would normally do as usual to the "ones" unit.

<!-- [[File:Multiplication_mnemonic_7.svg|thumb|120px|Using the mnemonic to recall multiples of 7]] -->
For example, to recall all the multiples of 7:

# Look at the 7 in the first picture and follow the arrow.
# The next number in the direction of the arrow is 4. So think of the next number after 7 that ends with 4, which is 14.
# The next number in the direction of the arrow is 1. So think of the next number after 14 that ends with 1, which is 21.
# After coming to the top of this column, start with the bottom of the next column, and travel in the same direction. The number is 8. So think of the next number after 21 that ends with 8, which is 28.
# Proceed in the same way until the last number, 3, corresponding to 63.
# Next, use the 0 at the bottom. It corresponds to 70.
# Then, start again with the 7.  This time it will correspond to 77.
# Continue like this.